Based on a report from Ummid.com, Saudi Arabia has announced that the crescent moon of Dhul-Hijja was not sighted in the region on the evening of Thursday, 1 September 2016. Therefore they concluded that the hijri date of 1 Dhul-Hijja 1437 AH falls on Saturday, 3 September 2016. This makes the day of Arafah (wuquf) on Sunday, 11 September 2016 and the celebration of Eid-ul-Adha will be on Monday, 12 September 2016.
Below is the cited source:
The Supreme Court of Saudi Arabia after a meeting to analyse the moon reports on Thursday September 01, 2016 corresponding to 29th of Dhulka’edah 1437 AH announced that Eid al Adha this year will be celebrated on September 12, 2016 whereas Youm-ul-Hajj i.e. Arafat Day will be on September 11, 2016.
Youm-e-Arafah (Arafat Day), also called as Youm-ul-Hajj, is on the 9th day of Dhul Hijjah whereas Eid al Adha is observed a day later i.e. on 10th day of Dhul Hijjah.
“The new moon was not spotted tonight, which means the first day of Eid al Adha will be September 12”, Saudi Arabia’s High Judiciary Council said a shortwhile ago.
With this decission, the Umm al-Qura lunar calendar for the month of Dhu al-Hijjah 1437 AH should be revised. The pre-calculated date of 1 Dhu al-Hijjah 1437 AH was on 2 September 2016.
Original source: SPA (Saudi Press Agency – official news agency)